by Tarun Agarwal 12 years ago IR Remote Control – Basics, Operation & Application What’s inside the IR remote? The IR remote is generally used in home theatres and is based on the principle of using infrared light as the medium of communication. A TV remote consists of a set of buttons and a circuit board. Each button...
by Tarun Agarwal 12 years ago What is a Touch Screen Technology & Its Working Touch screen technology is the direct manipulation type of gesture-based technology. Direct manipulation is the ability to manipulate the digital world inside a screen. A Touch screen is an electronic visual display capable of detecting...
by Tarun Agarwal 12 years ago Silicon Controlled Rectifiers – Basics, Operation & Applications Modern power electronics truly began with the advent of thyristors. Thyristors are also known as the silicon controlled rectifiers or SCRs. These are four layered and three-terminal semiconductor devices. And thyristors are unidirectional...
by Tarun Agarwal 12 years ago Interfacing Alphanumeric Display with AT89S52 Microcontroller To give instructions or information qualities to users, numerous microcontroller instruments and machines need to display letters of the alphabet and numbers. In system where only a small amount of information/data should be shown, modest...
by Tarun Agarwal 12 years ago Fuzzy Logic – A Way to Achieve Control Based on Imprecise Inputs In this era of digital control, almost every appliance is controlled using the digital control level using 1 and 0. But just think, isn’t it quite unpractical to think every output of the daily processes you come across, depends only...
by Tarun Agarwal 12 years ago How does the Smart Card Works? The first smart card like Télécarte was launched in the year 1983. It is a telephone card used for payments within French payphones. At present, Smart cards are everywhere & they have replaced by magnetic stripe card technology, which...
by Tarun Agarwal 12 years ago Understanding Voice Recognition Imagine yourself sitting relaxed on the sofa and just ordering your computer or laptop or cell phone to carry out simple tasks like typing a letter or carrying out few commands. Is it possible? Of course it is, that’s where Voice recognition...
by Tarun Agarwal 12 years ago Testing FM Transmitter Frequency Modulation (FM): We know that in amplitude modulation (AM), the frequency is constant which varies only the amplitude. Whereas in frequency modulation (FM), which varies the frequency and keeps the amplitude constant. There are...
by Tarun Agarwal 12 years ago Fingerprint Identification Fingerprint identification is the method of identification based on the different patterns of human fingers, which is unique among each person. It is the most popular way of acquiring details of any person and is the easiest and convenient...
by Tarun Agarwal 12 years ago What is Transistor Transistor Logic (TTL) & Its Working Logic Gates like NAND, NOR are used in daily applications for performing logic operations. The Gates are manufactured using semiconductor devices like BJT, Diodes, or FETs. Different Gate’s are constructed using Integrated circuits. Digital...
